CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement [Abstract]
Net sales	$ 359.7	$ 368.9	$ 695.6	$ 715.7
Cost of goods and services sold	241.5	247.1	467.7	487.5
Gross profit	118.2	121.8	227.9	228.2
Research and development	8.1	9.9	15.6	19.9
Selling, general and administrative expenses	60.8	57.5	116.0	113.9
Other expense (Note 11)	10.2	0.3	9.4	1.0
Operating profit	39.1	54.1	86.9	93.4
Interest expense	3.4	4.2	7.5	8.2
Interest income	0.4	0.5	0.8	0.9
Income before income taxes	36.1	50.4	80.2	86.1
Income tax expense	9.2	14.0	21.7	23.8
Equity in net income of affiliated companies	0.9	1.2	2.2	2.4
Net income	$ 27.8	$ 37.6	$ 60.7	$ 64.7
Net income per share:
Basic (in dollars per share)	$ 0.39	$ 0.53	$ 0.84	$ 0.92
Diluted (in dollars per share)	$ 0.38	$ 0.52	$ 0.83	$ 0.89
Weighted average shares outstanding:
Basic (in shares)	72.0	70.8	71.9	70.7
Diluted (in shares)	73.7	72.4	73.5	72.4
Dividends declared per share	$ 0.11	$ 0.10	$ 0.22	$ 0.20